=LDR 22 4500 =001 441 =082 04$a2004 ZAN =100 1\$aZancada, Andres =245 10$aBiological assessment of the impacted Avoca river, Co. Wicklow =260 \\$aDublin :$bUniversity of Dublin, Trinity College,$c2004 =650 \0$aTheses =852 \\$bFreeman Library$h2004 ZAN